Statistics for occurrence #1 of “Mr. Jefferson” in chapter 4 of Horace Greeley, The American Conflict: A History of the Great Rebellion in the United States of America, 1860-65: its Causes, Incidents, and Results: Intended to exhibit especially its moral and political phases with the drift and progress of American opinion respecting human slavery from 1776 to the close of the War for the Union. Volume I.:

...rnment of the Territories of the United States northwest of the Ohio, excluding, by its silence, the territories south of that river, which were expressly brought within the purview and operation of Mr. Jefferson 's Ordinance — those territories not having, as yet, been ceded by the States claiming them respectively as their peculiar possessions. Mr. Dane's ordinance embodies many provisions originally...
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